Archaeologist and super-sleuth Velma is in Egypt for the unveiling ceremony of the restored Sphinx – a mysterious mythical creature with the head of a man and the body of a lion – only to discover a hidden tomb that belonging to Cleopatra herself! But beware the ancient pharaoh’s curse: “The Nile will fall, the desert will rise, and all those who dare enter will be turned to stone!” Of course that won’t stop Scooby-Doo and the Mystery Inc. team from going inside and finding something even more mummifying – a cursed army of the undead!